Submarine telescope.



W. S. ARMSTRONG. SUBMARINE TELESCOPE. APPLICATION FILED JULY 24. 1915.

0% 1 9 1 mm P A d m m P lm Mum WILLIAM S. ARMSTRONG, OF SAN ANTONIO, TEXAS.

SUBMARINE TELESCOFE.

Specification of Letters Patent.

. Patented Apr. 22, 1919.

Application filed July 2 1, 1916. Serial No. 111,017.

To all whom it may concern:

Be it known that T, WILLIAM S. Aiz vi- STRONG, a citizen of the United States, residing at San Antonio, in the county of Bcxai' and State of Texas, have invented certain useful Improvements in Submarine Telescopes, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in submarine telescopes, one object of the invention being the provision of a mechanism by means of which submerged ob ects may be readily located by peering through the present apparatus.

A. further object of this invention is the provision of such a device which will assist in the location of bodies when grappling for the same, so that the bodies may be more definitely located and brought to the surface.

In the accompanying drawings Figure 1 is a perspective view of the device attached to a boat.

Fig. 2 is a sectional view through the light directing tube of the member Fig. 3 is a longitudinal section of the telescope tube.

Referring to the drawings, there is shown a light projecting tube 5 whose interior is lined with mirrors 6 which may be made in any desired manner. The lower end of this light projecting tube 5 is closed by a magni fying lens 7 and this tube carries near its upper end an electric light 8 so mounted as to project its rays longitudinally through the tube and through the lens.

Standing parallel with the tube 5, there is a second tube 10 which is rigidly attached to the tube 5 in any desired manner. This tube 10 is intended to inclose telescopic lenses of any conventional form and to be appropriately closed at this bottom end 12 to preclude the entrance of water therein, the upper end being provided with a sight hole 11 so that a person employing the device may be enabled to peep therethrough to make observations in the vicinity of the lower end, the region around which is illuminated by the rays of the light 8 which are projected through the magnifying lens 7 of the tube 5 The device is intended primarily for making submarine observation and is intended to be swung over the sides or stern of a boat 20 on which it is supported by appropriate chains 17 and 18, as shown in Fig. 1. The chains 17 and 18 each have one end attached respectively to the tubes 10 and 5, these respective tubes carrying at points below those to which the chains are attached the projecting arms 15 and 16 both of which have eyes formed at their free ends. The two chains 17 and 18 extend up to the boat and then back again in the direction of the length of the two tubes, the chain 17 on its return passing through the eye of the arm 15 and the chain 18 passing through the eye in the arm 16. These two chains 17 and 18 carry at their free ends weights 13 and 14 respectively, the two chains in conjunction with the arms 15 and 16 and the weights 13 and 14 serving to keep the lower ends of the two tubes submerged, the arms serving to keep the weights away from the lower ends of the tubes so that they may not interfere with the functions of the latter.

The tube 5 carries at a point directly above the lamp 8 a reflector 19 which serves to reflect the rays of the lamp toward the bottom end of this tube. The current for lighting the lamp is intended to be derived from a battery or other suitable source carried within the boat 20 which current is transmitted to the lamp through appropriate wires connecting the lamp with the battery.

It will be observed that the two tubes are appropriately supported on the boat 20 through the medium of the chains 17 and 18 and, since these are intended to have slidable connection where they are attached to the boat it is apparent that the depth to which the tubes are submerged may be varied. the particular manner of attaching the chains making this condition possible, as the weights act as a counter-balance for the tubes, the weights lowering and the chains sliding through the eyes of the arms 15 and 16 as the tubes are raised or under-going the reverse of this operation as the tubes are lowered. The use of the weights 13 and 14c and the points at which they are connected place the center of gravity of the device as a whole near the ends of the tubes. Therefore, when the tubes are lowered, the weights overcome the buoyant effect of the water at the lower ends of the tubes and keep these lower ends submerged, the arms 15 and 16 serving to keep the weights spaced away from the lower ends of the tubes so as not to interfere with observations made through the latter.

What I claim as new is In a device as described, in combination, a

boat, a pair of longitudinal tubes, a telescope arranged in one of said tubes, a lens mounted upon the lower end of the other tube, an electric light bulb arranged within the lastnamed tube above said lens, a pair of chains adapted to be secured to said boat and also to said tubes intermediate their ends, another pair of chains also secured to said boat and extending down into a body of Water, weight secured to the lower portions of the 10 last-named chains, and rigid rods extending outwardly from said tubes and formed with terminal eyes in which the last-named chains project.

In testimonfr whereof I afiix my signature. 15

W LLIAM S. ARMSTRONG. 

